Wear-resistant gravel conveying device of drag suction sand dredger
By designing a sand and gravel conveyor for rake-sucking sand-dig ship with wear-resistant inner pipes and specific sealing structures, the serious wear problem of conveying device is solved, reducing costs and improving operating stability and production efficiency.
Patent Information
- Application Number
- CN202422548086.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The conveying devices of traditional rake suction and digging ships wear severely when conveying sand and gravel, resulting in reduced service life, high maintenance and replacement costs, and it is difficult to adapt to the wear resistance requirements of sand mining operations.
A wear-resistant conveying device for rake-sucking sand and gravel, including flange, conveying outer pipe, wear-resistant inner pipe, sealing ring and locking device, is designed. It adopts wear-resistant materials and a specific sealing structure to ensure stability and reliability, and facilitates installation and replacement of the inner pipe through hanging lugs and arrows.
It reduces manufacturing costs and personnel costs, improves production efficiency, prevents sand and gravel from entering the gap between the inner and outer pipes, avoids getting stuck, and ensures the stability of the device operation.
Smart Images
Figure CN223120924U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of conveying devices, and particularly relates to a wear-resistant conveying device for sand and gravel of a trailing suction hopper dredger. Background Art
[0002] In the fields of ocean engineering and river sand mining operations, etc., trailing suction hopper dredgers play a crucial role. However, traditional trailing suction hopper dredgers face many problems when conveying sand and gravel. Firstly, sand and gravel usually have high hardness and irregular shapes, and will cause extremely serious wear to the conveying pipes of the conveying device during the conveying process. Over time, this wear phenomenon will not only greatly reduce the service life of the conveying pipes, resulting in a significant increase in maintenance and replacement costs, but also very likely cause equipment failures, thereby having an adverse impact on the efficiency and continuity of the sand mining operation. Secondly, with the continuous increase in the intensity of sand mining operations and the increasing diversification of the quality of sand and gravel, the requirements for the wear resistance of the conveying pipes of the conveying device are also constantly rising. However, the existing conveying pipes of the conveying device have relatively high costs during use and maintenance. Content of the Utility Model
[0003] The purpose of the utility model is to provide a wear-resistant conveying device for sand and gravel of a trailing suction hopper dredger to solve the problem that the existing conveying pipes of the conveying device have relatively high costs during use and maintenance.
[0004] To solve the above problems, the present utility model provides a technical solution: a wear-resistant sand and gravel conveying device for a trailing suction dredger, comprising a first flange, a conveying outer pipe, an arrow, a locking device, a lifting lug, a second flange, a second connection hole, a first connection hole, a first convex groove, a first positioning groove, a second positioning groove, a second convex groove, a first concave clamping groove, an outer sealing ring groove, a first sealing ring, a wear-resistant inner conveying pipe, an inner sealing ring groove, a second sealing ring, and a second convex clamping groove; a plurality of first connection holes are evenly formed around the left end face of the first flange, a first convex groove is arranged on the right end face of the first flange, a second convex clamping groove is arranged on the left side inside the first flange, an inner sealing ring groove is formed on the inner wall of the second convex clamping groove, and a second sealing ring is arranged inside the inner sealing ring groove; a plurality of second connection holes are evenly formed around the right end face of the second flange, a second convex groove is arranged on the left end face of the second flange, and a first concave clamping groove is arranged on the right side inside the second flange; a first positioning groove is formed on the left end face of the conveying outer pipe and is connected to the first convex groove, the left end face of the conveying outer pipe is fixedly connected to the right end face of the first flange, a second positioning groove is formed on the right end face of the conveying outer pipe and is connected to the second convex groove, and the right end face of the conveying outer pipe is fixedly connected to the left end face of the second flange; the wear-resistant inner conveying pipe is located inside the conveying outer pipe, the outer part of the right side of the wear-resistant inner conveying pipe is located inside the first concave clamping groove, an outer sealing ring groove is formed on the outer part of the right side of the wear-resistant inner conveying pipe, and a first sealing ring is arranged inside the outer sealing ring groove, and the outer part of the left side of the wear-resistant inner conveying pipe is located inside the second convex clamping groove; the number of lifting lugs is several, and the several lifting lugs are respectively fixedly connected to the peripheries of the left and right sides outside the conveying outer pipe; the arrow is arranged on the outer surface of the conveying outer pipe; the number of locking devices is several, the several locking devices are respectively arranged around the center outside the conveying outer pipe, and the inner sides of the several locking devices are all connected to the center outside the wear-resistant inner conveying pipe.
[0005] Preferably, the specific structure of the locking device includes a fixing nut, a gasket, a locking nut, a locking bolt, and a communication hole; the communication hole is formed in the center of the conveying outer pipe, and a fixing nut is fixedly connected to the opening on the outer side of the communication hole; the lower external thread of the locking bolt is connected to the fixing nut; the locking nut is connected to the upper external thread of the locking bolt, and a gasket is arranged between the bottom surface of the locking nut and the top surface of the fixing nut.
[0006] Preferably, the gap between the outer side surface of the wear-resistant inner conveying pipe and the inner wall of the conveying outer pipe is 10 mm.
[0007] Preferably, the wear-resistant inner conveying pipe is made of wear-resistant material.
[0008] Preferably, both the first flange and the second flange are of high-neck flange structure.
[0009] Advantages of the utility model: (1) The utility model has a reasonable and simple structure, low production cost, convenient installation, and complete functions. By the cooperation of flange one with the convex groove and positioning groove of the conveying outer pipe, and flange two with the convex groove and positioning groove of the conveying outer pipe, the stability and reliability after welding are ensured. The wear-resistant inner pipe of the conveying adopts wear-resistant materials, and there is a gap between the outer diameter of the inner pipe and the inner diameter of the outer pipe for convenient replacement, reducing the manufacturing cost and personnel cost.
[0010] (2) The utility model adopts a specific sealing structure, enhancing the sealing effect through seal ring one and seal ring two, preventing sand and gravel from entering the gap between the inner and outer pipes, avoiding jamming of the inner and outer pipes. There are lifting lugs for convenient assembly and turning operation of the device. The arrow indicates the installation and conveying direction of the inner pipe, facilitating accurate installation by the staff. The locking device can reduce the risk of the wear-resistant inner pipe of the conveying from moving, ensuring the stability of the device operation. Brief description of the drawings
[0011] Figure 1 It is a schematic structural diagram of the utility model.
[0012] Figure 2 is Figure 1 the sectional view of
[0013] Figure 3 It is the enlarged view of position A in 2.
[0014] Figure 4 It is the enlarged view of position B in 2.
[0015] Figure 5 Schematic structural diagram of the locking device.
[0016] 1 - Flange one; 2 - Conveying outer pipe; 3 - Arrow; 4 - Locking device; 5 - Lifting lug; 6 - Flange two; 7 - Connecting hole two; 8 - Connecting hole one; 9 - Convex groove one; 10 - Positioning groove one; 11 - Positioning groove two; 12 - Convex groove two; 13 - Concave clamping groove one; 14 - Outer seal ring groove; 15 - Seal ring one; 16 - Wear-resistant inner pipe for conveying; 17 - Inner seal ring groove; 18 - Seal ring two; 19 - Convex clamping groove two; 41 - Fixed nut; 42 - Gasket; 43 - Locking nut; 44 - Locking bolt; 45 - Communication hole. Detailed implementation manners
[0017] Such as Figures 1 to 4As shown in the figure, the following technical solution is adopted in this specific embodiment: a wear-resistant sand and gravel conveying device for a trailing suction dredger, comprising a first flange 1, a conveying outer pipe 2, an arrow 3, a locking device 4, a lifting lug 5, a second flange 6, a second connection hole 7, a first connection hole 8, a first convex groove 9, a first positioning groove 10, a second positioning groove 11, a second convex groove 12, a first concave clamping groove 13, an outer sealing ring groove 14, a first sealing ring 15, a wear-resistant inner conveying pipe 16, an inner sealing ring groove 17, a second sealing ring 18 and a second convex clamping groove 19; a plurality of first connection holes 8 are evenly formed around the left end face of the first flange 1, a first convex groove 9 is arranged on the right end face of the first flange 1, a second convex clamping groove 19 is arranged on the left side inside the first flange 1, an inner sealing ring groove 17 is formed on the inner wall of the second convex clamping groove 19, and a second sealing ring 18 is arranged inside the inner sealing ring groove 17; a plurality of second connection holes 7 are evenly formed around the right end face of the second flange 6, a second convex groove 12 is arranged on the left end face of the second flange 6, and a first concave clamping groove 13 is arranged on the right side inside the second flange 6; a first positioning groove 10 is formed on the left end face of the conveying outer pipe 2, and the first positioning groove 10 is connected to the first convex groove 9. The left end face of the conveying outer pipe 2 is fixedly connected to the right end face of the first flange 1. A second positioning groove 11 is formed on the right end face of the conveying outer pipe 2, and the second positioning groove 11 is connected to the second convex groove 12. The right end face of the conveying outer pipe 2 is fixedly connected to the left end face of the second flange 6; the wear-resistant inner conveying pipe 16 is located inside the conveying outer pipe 2. The outer part of the right side of the wear-resistant inner conveying pipe 16 is located inside the first concave clamping groove 13. An outer sealing ring groove 14 is formed on the outer part of the right side of the wear-resistant inner conveying pipe 16, and a first sealing ring 15 is arranged inside the outer sealing ring groove 14. The outer part of the left side of the wear-resistant inner conveying pipe 16 is located inside the second convex clamping groove 19; there are several lifting lugs 5, and the several lifting lugs 5 are respectively fixedly connected to the outer peripheries around the left and right sides of the conveying outer pipe 2; the arrow 3 is arranged on the outer surface of the conveying outer pipe 2; there are several locking devices 4, and the several locking devices 4 are respectively arranged around the center of the outer part of the conveying outer pipe 2. The inner sides of the several locking devices 4 are all connected to the center of the outer side of the wear-resistant inner conveying pipe 16.
[0018] As Figure 5 shown, the specific structure of the locking device 4 includes a fixing nut 41, a gasket 42, a locking nut 43, a locking bolt 44 and a communication hole 45; the communication hole 45 is formed in the center of the conveying outer pipe 2, and a fixing nut 41 is fixedly connected to the outer opening of the communication hole 45; the lower external thread of the locking bolt 44 is connected to the fixing nut 41; the locking nut 43 is connected to the upper external thread of the locking bolt 44, and a gasket 42 is arranged between the bottom surface of the locking nut 43 and the top surface of the fixing nut 41.
[0019] Among them, the gap between the outer side surface of the conveying wear-resistant inner pipe 16 and the inner wall of the conveying outer pipe 2 is 10 mm; the conveying wear-resistant inner pipe 16 is made of wear-resistant material, and here the wear-resistant material is Ni-Hard4; both the first flange 1 and the second flange 6 are high-neck flange structures.
[0020] The use status of the utility model is: the utility model has a reasonable and simple structure, low production cost, convenient installation, and complete functions. When the drag suction dredger performs sand and gravel conveying operations, the wear-resistant conveying device begins to play an important role. First, the flange 1 is connected and fixed with the corresponding equipment through a plurality of connecting holes 8 evenly opened on its left end face. The convex groove 9 on the right end face of the flange 1 is tightly matched with the positioning groove 10 on the left end face of the conveying outer tube 2 to ensure stability and reliability after welding. At the same time, the connecting hole 27 on the right end face of the flange 26 is used for connection with other components, and the convex groove 212 on the left end face thereof is matched with the positioning groove 211 on the right end face of the conveying outer tube 2 to ensure stability and reliability after welding. To ensure the stability and reliability after welding, the wear-resistant inner tube 16 is located inside the outer tube 2, and its right side is placed in the concave groove 13 on the right side of the flange 6, and the sealing ring 15 in the outer sealing ring groove 14 opened on the right side plays a sealing role to prevent sand and gravel from entering the gap between the inner and outer tubes. The left side of the wear-resistant inner tube 16 is located in the convex groove 19 on the left side of the flange 1, and the inner sealing ring groove 17 on the inner wall of the convex groove 19 and the sealing ring 18 therein further enhance the sealing effect. When the device needs to be assembled or turned over, several lifting ears 5 distributed around the outer left and right sides of the outer tube 2 play a role, and can be connected to the lifting ears 5 through a sling, so that the operation is convenient and quick. The arrow 3 on the outer surface of the conveying outer tube 2 intuitively indicates the installation and conveying direction of the conveying wear-resistant inner tube 16, which is convenient for the staff to install accurately. When the device is in operation, in order to reduce the risk of movement of the conveying wear-resistant inner tube 16, the locking device 4 located around the outer center of the conveying outer tube 2 begins to play a role. Specifically, the locking bolt 44 in the locking device 4 is connected with the fixing nut 41 at the outer opening of the connecting hole 45, and the locking nut 43 is connected with the upper external thread of the locking bolt 44, and the gasket 42 between the bottom surface of the locking nut 43 and the top surface of the fixing nut 41, which work together to resist the conveying wear-resistant inner tube 16. Due to the serious wear of the inner tube by sand and gravel transportation, although the conveying wear-resistant inner tube 16 is The inner grinding tube 16 is made of Ni-Hard4 wear-resistant material, but after long-term use, the design of leaving a 10mm gap between the outer diameter of the inner tube and the inner diameter of the outer tube facilitates the replacement of the inner tube. When the inner tube needs to be replaced, the device can be easily turned over with the help of the lifting ear 5, and the operation is carried out in the direction indicated by the arrow 3 to loosen the locking device 4. The worn conveying wear-resistant inner tube 16 is taken out from the conveying outer tube 2. After replacing the new inner tube, it can be reassembled according to the installation steps and continued to be used. In short, this sand and gravel wear-resistant conveying device of the suction dredger is novel in design and simple in structure. During use, it can effectively solve the problem of frequent replacement of conveying pipelines due to sand and gravel wear, thereby improving production efficiency and reducing manufacturing cost and personnel cost.
[0021] In the control mode of the present utility model, it is controlled by manual startup or through existing automation technologies. The wiring diagram of the power element and the power supply provision belong to the common general knowledge in the field, and the present utility model is mainly used to protect mechanical devices. Therefore, the control mode and wiring arrangement of the present utility model will not be explained in detail.
[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0023] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "set", "connected", "fixed", "swivelly connected", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0024] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A gravel wear-resistant conveying device for a trailing suction hopper dredger, characterized in that: It includes flange one (1), conveying outer pipe (2), arrow (3), locking device (4), lifting lug (5), flange two (6), connecting hole two (7), connecting hole one (8), convex groove one (9), positioning groove one (10), positioning groove two (11), convex groove two (12), concave clamping groove one (13), outer sealing ring groove (14), sealing ring one (15), wear-resistant inner conveying pipe (16), inner sealing ring groove (17), sealing ring two (18) and convex clamping groove two (19); On the left end face periphery of the flange one (1), a number of connecting holes one (8) are evenly opened. On the right end face of the flange one (1), there is a convex groove one (9). Inside the left side of the flange one (1), there is a convex clamping groove two (19), and on the inner wall of the convex clamping groove two (19), there is an inner sealing ring groove (17), and inside the inner sealing ring groove (17), there is a sealing ring two (18); On the right end face periphery of the flange two (6), a number of connecting holes two (7) are evenly opened. On the left end face of the flange two (6), there is a convex groove two (12). Inside the right side of the flange two (6), there is a concave clamping groove one (13); On the left end face of the conveying outer pipe (2), there is a positioning groove one (10), and the positioning groove one (10) is connected to the convex groove one (9). The left end face of the conveying outer pipe (2) is fixedly connected to the right end face of the flange one (1). On the right end face of the conveying outer pipe (2), there is a positioning groove two (11), and the positioning groove two (11) is connected to the convex groove two (12). The right end face of the conveying outer pipe (2) is fixedly connected to the left end face of the flange two (6); The wear-resistant inner conveying pipe (16) is located inside the conveying outer pipe (2). The right outer part of the wear-resistant inner conveying pipe (16) is located inside the concave clamping groove one (13). On the right outer part of the wear-resistant inner conveying pipe (16), there is an outer sealing ring groove (14), and inside the outer sealing ring groove (14), there is a sealing ring one (15). The left outer part of the wear-resistant inner conveying pipe (16) is located inside the convex clamping groove two (19); The lifting lugs (5) are several, and several lifting lugs (5) are respectively fixedly connected to the outer peripheries of the left and right sides of the conveying outer pipe (2); The arrow (3) is arranged on the outer surface of the conveying outer pipe (2); The locking devices (4) are several, and several locking devices (4) are respectively arranged around the central part of the outside of the conveying outer pipe (2). The inner sides of several locking devices (4) are all connected to the central part of the outer side of the wear-resistant inner conveying pipe (16).
2. The gravel wear-resistant conveying device of the trailing suction hopper dredger according to claim 1, characterized in that: The specific structure of the locking device (4) includes a fixing nut (41), a gasket (42), a locking nut (43), a locking bolt (44) and a communication hole (45); The communication hole (45) is opened in the center of the conveying outer pipe (2), and at the outer opening of the communication hole (45), there is a fixing nut (41) fixedly connected; The lower external thread of the locking bolt (44) is connected to the fixing nut (41); The locking nut (43) is connected to the upper external thread of the locking bolt (44), and there is a gasket (42) between the bottom surface of the locking nut (43) and the top surface of the fixing nut (41).
3. The sand and gravel wear-resistant conveying device of the trailing suction hopper dredger according to claim 1, characterized in that: The clearance between the outer side surface of the conveying wear-resistant inner pipe (16) and the inner wall of the conveying outer pipe (2) is 10 mm.
4. The sand and gravel wear-resistant conveying device of the trailing suction hopper dredger according to claim 1, characterized in that: The conveying wear-resistant inner pipe (16) is made of wear-resistant material.
5. The sand and gravel abrasion-resistant conveying device of the trailing suction hopper dredger according to claim 1, characterized in that: Both the first flange (1) and the second flange (6) are of high-neck flange structure.